fast-import: tighten M 040000 syntax

diff --git a/Documentation/git-fast-import.txt b/Documentation/git-fast-import.txt
index 966ba4f21337e72f7be0a5b852e76a8b12192f7f..90a46665c93106ffb7976bb0bb49aea9b9debbf7 100644 (file)
--- a/Documentation/git-fast-import.txt
+++ b/Documentation/git-fast-import.txt
@@ -524,6 +524,9 @@ start with double quote (`"`).
 If an `LF` or double quote must be encoded into `<path>` shell-style
 quoting should be used, e.g. `"path/with\n and \" in it"`.
 
+Additionally, in `040000` mode, `<path>` may also be an empty string
+(`""`) to specify the root of the tree.
+
 The value of `<path>` must be in canonical form. That is it must not:
 
 * contain an empty directory component (e.g. `foo//bar` is invalid),